/** * @file llimageworker_test.cpp * @author Merov Linden * @date 2009-04-28 * * $LicenseInfo:firstyear=2006&license=viewergpl$ * * Copyright (c) 2006-2009, Linden Research, Inc. * * Second Life Viewer Source Code * The source code in this file ("Source Code") is provided by Linden Lab * to you under the terms of the GNU General Public License, version 2.0 * ("GPL"), unless you have obtained a separate licensing agreement * ("Other License"), formally executed by you and Linden Lab. Terms of * the GPL can be found in doc/GPL-license.txt in this distribution, or * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 * * There are special exceptions to the terms and conditions of the GPL as * it is applied to this Source Code. View the full text of the exception * in the file doc/FLOSS-exception.txt in this software distribution, or * online at * http://secondlifegrid.net/programs/open_source/licensing/flossexception * * By copying, modifying or distributing this software, you acknowledge * that you have read and understood your obligations described above, * and agree to abide by those obligations. * * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, * COMPLETENESS OR PERFORMANCE. * $/LicenseInfo$ */ // Precompiled header: almost always required for newview cpp files #include #include #include // Class to test #include "../llimageworker.h" // For timer class #include "../llcommon/lltimer.h" // Tut header #include "../test/lltut.h" // ------------------------------------------------------------------------------------------- // Stubbing: Declarations required to link and run the class being tested // Notes: // * Add here stubbed implementation of the few classes and methods used in the class to be tested // * Add as little as possible (let the link errors guide you) // * Do not make any assumption as to how those classes or methods work (i.e. don't copy/paste code) // * A simulator for a class can be implemented here. Please comment and document thoroughly. LLImageBase::LLImageBase() {} LLImageBase::~LLImageBase() {} void LLImageBase::dump() { } void LLImageBase::sanityCheck() { } void LLImageBase::deleteData() { } U8* LLImageBase::allocateData(S32 size) { return NULL; } U8* LLImageBase::reallocateData(S32 size) { return NULL; } LLImageRaw::LLImageRaw(U16 width, U16 height, S8 components) { } LLImageRaw::~LLImageRaw() { } void LLImageRaw::deleteData() { } U8* LLImageRaw::allocateData(S32 size) { return NULL; } U8* LLImageRaw::reallocateData(S32 size) { return NULL; } // End Stubbing // ------------------------------------------------------------------------------------------- // ------------------------------------------------------------------------------------------- // TUT // ------------------------------------------------------------------------------------------- namespace tut { // Test wrapper declarations // Note: We derive the responder class for 2 reasons: // 1. It's a pure virtual class and we can't compile without completed() being implemented // 2. We actually need a responder to test that the thread work test completed // We implement this making no assumption on what's done in the thread or worker // though, just that the responder's completed() method is called in the end. // Note on responders: responders are ref counted and *will* be deleted by the request they are // attached to when the queued request is deleted. The recommended way of using them is to // create them when creating a request, put a callback method in completed() and not rely on // anything to survive in the responder object once completed() has been called. Let the request // do the deletion and clean up itself. class responder_test : public LLImageDecodeThread::Responder { public: responder_test(bool* res) { done = res; *done = false; } virtual void completed(bool success, LLImageRaw* raw, LLImageRaw* aux) { *done = true; } private: // This is what can be thought of as the minimal implementation of a responder // Done will be switched to true when completed() is called and can be tested // outside the responder. A better way of doing this is to store a callback here. bool* done; }; // Test wrapper declaration : decode thread struct imagedecodethread_test { // Instance to be tested LLImageDecodeThread* mThread; // Constructor and destructor of the test wrapper imagedecodethread_test() { mThread = NULL; } ~imagedecodethread_test() { delete mThread; } }; // Test wrapper declaration : image worker // Note: this class is not meant to be instantiated outside an LLImageDecodeThread instance // but it's not a bad idea to get its public API a good shake as part of a thorough unit test set. // Some gotcha with the destructor though (see below). struct imagerequest_test { // Instance to be tested LLImageDecodeThread::ImageRequest* mRequest; bool done; // Constructor and destructor of the test wrapper imagerequest_test() { done = false; mRequest = new LLImageDecodeThread::ImageRequest(0, 0, LLQueuedThread::PRIORITY_NORMAL, 0, FALSE, new responder_test(&done)); } ~imagerequest_test() { // We should delete the object *but*, because its destructor is protected, that cannot be // done from outside an LLImageDecodeThread instance... So we leak memory here... It's fine... //delete mRequest; } }; // Tut templating thingamagic: test group, object and test instance typedef test_group imagedecodethread_t; typedef imagedecodethread_t::object imagedecodethread_object_t; tut::imagedecodethread_t tut_imagedecodethread("imagedecodethread"); typedef test_group imagerequest_t; typedef imagerequest_t::object imagerequest_object_t; tut::imagerequest_t tut_imagerequest("imagerequest"); // --------------------------------------------------------------------------------------- // Test functions // Notes: // * Test as many as you possibly can without requiring a full blown simulation of everything // * The tests are executed in sequence so the test instance state may change between calls // * Remember that you cannot test private methods with tut // --------------------------------------------------------------------------------------- // --------------------------------------------------------------------------------------- // Test the LLImageDecodeThread interface // --------------------------------------------------------------------------------------- // // Note on Unit Testing Queued Thread Classes // // Since methods on such a class are called on a separate loop and that we can't insert tut // ensure() calls in there, we exercise the class with 2 sets of tests: // - 1: Test as a single threaded instance: We declare the class but ask for no thread // to be spawned (easy with LLThreads since there's a boolean argument on the constructor // just for that). We can then unit test each public method like we do on a normal class. // - 2: Test as a threaded instance: We let the thread launch and check that its external // behavior is as expected (i.e. it runs, can accept a work order and processes // it). Typically though there's no guarantee that this exercises all the methods of the // class which is why we also need the previous "non threaded" set of unit tests for // complete coverage. // // --------------------------------------------------------------------------------------- template<> template<> void imagedecodethread_object_t::test<1>() { // Test a *non threaded* instance of the class mThread = new LLImageDecodeThread(false); ensure("LLImageDecodeThread: non threaded constructor failed", mThread != NULL); // Test that we start with an empty list right at creation ensure("LLImageDecodeThread: non threaded init state incorrect", mThread->tut_size() == 0); // Insert something in the queue bool done = false; LLImageDecodeThread::handle_t decodeHandle = mThread->decodeImage(NULL, LLQueuedThread::PRIORITY_NORMAL, 0, FALSE, new responder_test(&done)); // Verifies we got a valid handle ensure("LLImageDecodeThread: non threaded decodeImage(), returned handle is null", decodeHandle != 0); // Verifies that we do now have something in the queued list ensure("LLImageDecodeThread: non threaded decodeImage() insertion in threaded list failed", mThread->tut_size() == 1); // Trigger queue handling "manually" (on a threaded instance, this is done on the thread loop) S32 res = mThread->update(0); // Verifies that we successfully handled the list ensure("LLImageDecodeThread: non threaded update() list handling test failed", res == 0); // Verifies that the list is now empty ensure("LLImageDecodeThread: non threaded update() list emptying test failed", mThread->tut_size() == 0); } template<> template<> void imagedecodethread_object_t::test<2>() { // Test a *threaded* instance of the class mThread = new LLImageDecodeThread(true); ensure("LLImageDecodeThread: threaded constructor failed", mThread != NULL); // Test that we start with an empty list right at creation ensure("LLImageDecodeThread: threaded init state incorrect", mThread->tut_size() == 0); // Insert something in the queue bool done = false; LLImageDecodeThread::handle_t decodeHandle = mThread->decodeImage(NULL, LLQueuedThread::PRIORITY_NORMAL, 0, FALSE, new responder_test(&done)); // Verifies we get back a valid handle ensure("LLImageDecodeThread: threaded decodeImage(), returned handle is null", decodeHandle != 0); // Wait a little so to simulate the main thread doing something on its main loop... ms_sleep(500); // 500 milliseconds // Verifies that the responder has *not* been called yet in the meantime ensure("LLImageDecodeThread: responder creation failed", done == false); // Ask the thread to update: that means tells the queue to check itself and creates work requests mThread->update(1); // Wait till the thread has time to handle the work order (though it doesn't do much per work order...) const U32 INCREMENT_TIME = 500; // 500 milliseconds const U32 MAX_TIME = 20 * INCREMENT_TIME; // Do the loop 20 times max, i.e. wait 10 seconds but no more U32 total_time = 0; while ((done == false) && (total_time < MAX_TIME)) { ms_sleep(INCREMENT_TIME); total_time += INCREMENT_TIME; } // Verifies that the responder has now been called ensure("LLImageDecodeThread: threaded work unit not processed", done == true); } // --------------------------------------------------------------------------------------- // Test the LLImageDecodeThread::ImageRequest interface // --------------------------------------------------------------------------------------- template<> template<> void imagerequest_object_t::test<1>() { // Test that we start with a correct request at creation ensure("LLImageDecodeThread::ImageRequest::ImageRequest() constructor test failed", mRequest->tut_isOK()); bool res = mRequest->processRequest(); // Verifies that we processed the request successfully ensure("LLImageDecodeThread::ImageRequest::processRequest() processing request test failed", res == true); // Check that we can call the finishing call safely try { mRequest->finishRequest(false); } catch (...) { fail("LLImageDecodeThread::ImageRequest::finishRequest() test failed"); } } }